With their special tooth profiles, mount pins and climbing aids, the Dura Ace FC-R9200 chainrings enable a particularly smooth and fast shifting process. With them, shifting under load, as one would otherwise only be used to with a rear derailleur, is possible without any problems. Its carbon fiber reinforced plastic construction with aluminum teeth helps keep weight down while increasing torsional rigidity. The Hollowglide profile of the large chainrings also contributes to this.
Specifications
Material: aluminum, carbon fiber reinforced plastic
Technology: Hollowglide
Bolt circle diameter : 110 mm asymmetrical
Attachment: 4-arm spider asymmetrical
Compatibility cranks : Shimano Dura Ace FC-R9200
Compatibility chain: Shimano HG+ 12-speed
Mounting: outside
Chain line : 44.5mm
Colour: anthracite, glossy
Mfr Claimed Weight
TBC
